package operation;

import book.Book;
import book.BookList;

import java.util.Scanner;

public class DelOperation implements IOperation {
    @Override
    public void work(BookList bookList) {
        System.out.println("请输入你要删除的图书");
        int index = 0;
        Scanner scanner = new Scanner(System.in);
        String name = scanner.nextLine();
        int currentSize = bookList.getUsedSize();
        for (int i = 0; i < currentSize; i++) {
            Book book = bookList.getBook(i);
            if (book.getName().equals(name)) {
                System.out.println("找到了这本书");
                index = i;
                break;
            }
        }
        if (index >= currentSize) {
            System.out.println("没有找到你要删除的书");
            return;
        }
        //删除就是让后面的往前覆盖
        for (int j = index; j <currentSize-1 ; j++) {

              Book book=bookList.getBook(j);
              bookList.setBook(j,book);

        }
        bookList.setUsedSize(currentSize-1);
        System.out.println("删除成功.....");
    }
}
